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Non-Controlling Interests (Tables) | 12 Months Ended
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Dec. 31, 2020
Interests In Other Entities [Abstract] |
Share of ownership and equity participation in TransAlta Renewables | The Corporation’s subsidiaries and operations that have non-controlling interests are as follows:
Subsidiary/Operation | Non-controlling interest as at Dec. 31, 2020
TransAlta Cogeneration L.P. | 49.99% - Canadian Power Holdings Inc.
TransAlta Renewables | 39.9% - Public shareholders
Kent Hills Wind LP(1) | 17% - Natural Forces Technologies Inc.
(1) Owned by TransAlta Renewables.
Subsidiaries and operations with non-controlling interests | As a result of the DRIP and the Share Offering described in Note 4(W), the Corporation’s share of ownership and equity participation in TransAlta Renewables has changed as follows:
Period | Ownership and voting rights percentage | Equity participation percentage
Aug. 1, 2017 to June 21, 2018 | 64.0 |  | 64.0 |
June 22, 2018 to July 30, 2018 | 61.1 |  | 61.1 |
July 31, 2018 to Nov. 29, 2018 | 61.0 |  | 61.0 |
Nov. 30, 2018 to Dec. 31, 2018 | 60.9 |  | 60.9 |
Jan. 1, 2019 to Mar. 31, 2019 | 60.8 |  | 60.8 |
April 1, 2019 to June 30, 2019 | 60.6 |  | 60.6 |
July 1, 2019 to Sept. 30, 2019 | 60.5 |  | 60.5 |
Oct. 1, 2019 to Dec. 31, 2019 | 60.4 |  | 60.4 |
Jan. 1, 2020 to Mar. 31, 2020 | 60.3 |  | 60.3 |
April 1, 2020 to June 30, 2020 | 60.2 |  | 60.2 |
July 1, 2020 to Dec. 31, 2020 | 60.1 |  | 60.1 |
Disclosure of interests in subsidiaries |
Year ended Dec. 31 | 2020 | 2019 | 2018
Revenues | 436 |  | 446 |  | 462 |
Net earnings | 97 |  | 183 |  | 241 |
Total comprehensive income | 223 |  | 138 |  | 281 |
Amounts attributable to the non-controlling interests: |  |  |
Net earnings | 40 |  | 73 |  | 94 |
Total comprehensive income | 90 |  | 56 |  | 110 |
Distributions paid to non-controlling interests | 80 |  | 69 |  | 79 |
As at Dec. 31 | 2020 | 2019
Current assets | 743 |  | 293 |
Long-term assets | 2,913 |  | 3,409 |
Current liabilities | (364) |  | (152) |
Long-term liabilities | (987) |  | (1,237) |
Total equity | (2,305) |  | (2,313) |
Equity attributable to non-controlling interests | (948) |  | (941) |
Non-controlling interests’ share (per cent) | 39.9 | 39.6
B. TA Cogen
Year ended Dec. 31 | 2020 | 2019 | 2018
Results of operations |  |  |
Revenues | 146 |  | 181 |  | 185 |
Net earnings (loss) | (13) |  | 43 |  | 29 |
Total comprehensive income (loss) | (13) |  | 43 |  | 29 |
Amounts attributable to the non-controlling interest: |  |  |
Net earnings (loss) | (6) |  | 21 |  | 14 |
Total comprehensive income (loss) | (6) |  | 21 |  | 14 |
Distributions paid to Canadian Power Holdings Inc. | 17 |  | 37 |  | 86 |
As at Dec. 31 | 2020 | 2019
Current assets | 69 |  | 41 |
Long-term assets | 323 |  | 328 |
Current liabilities | (78) |  | (27) |
Long-term liabilities | (37) |  | (19) |
Total equity | (277) |  | (323) |
Equity attributable to Canadian Power Holdings Inc. | (136) |  | (160) |
Non-controlling interest share (per cent) | 49.99 | 49.99
Details of the Corporation’s principal operating subsidiaries at Dec. 31, 2020, are as follows:
Subsidiary | Country | Ownership (per cent) | Principal activity
TransAlta Generation Partnership | Canada | 100 | Generation and sale of electricity
TransAlta Cogeneration, L.P. | Canada | 50.01 | Generation and sale of electricity
TransAlta Centralia Generation, LLC | US | 100 | Generation and sale of electricity
TransAlta Energy Marketing Corp. | Canada | 100 | Energy marketing
TransAlta Energy Marketing (U.S.), Inc. | US | 100 | Energy marketing
TransAlta Energy (Australia), Pty Ltd. | Australia | 100 | Generation and sale of electricity
TransAlta Renewables Inc. | Canada | 60.1 | Generation and sale of electricity
Associate or joint venture | Country | Ownership (per cent) | Principal activity
SP Skookumchuck Investment, LLC | US | 49 | Generation and sale of electricity
EMG International, LLC | US | 30 | Wastewater treatment and biogas fuel to generate electricity

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